Sole cementing machine



SOLE CEMENTIN G MACHINE Manfred E. Pehrson, Malden, Mass., assignor toPrime Manufacturing Company, Lynn, Mass., a corporation of MassachusettsApplication April 15, 1955, Serial No. 501,476

7 Claims. (Cl. 118-407) This invention comprises a new and improvedmachine for applying a band of adhesive cement to a shoe sole or othershoe part preparatory to attaching a rib, binding or wall thereto. Animportant field of use for such machines is in preparing flat insoleblanks for the adhesive attachment of a sewing rib in the manufacture ofGoodyear welt shoes, and the machine of this invention will be describedwith that field particularly in view.

An important feature of the machine lies in improved mechanism forsupporting and directing the sole blank to a cement extruding nozzle,the supporting mechanism being such that a blank of light and flexiblematerial may be positively controlled at all times and presented in flatcondition to the nozzle without danger of wrinkling or buckling.Considerable trouble has been encountered in this respect in attemptingto use machines heretofore available to the shoemaking industry, andmanufacturers have been hampered and restricted in the use of insoleblanks of the softness and flexibility that they would otherwise employ.

Accordingly, an important feature of the invention consists in a worksupporting disk rotatable about a vertical axis and having an upstandingconcentric rib defining a marginal shoulder on the disk and asupplementary disk overlapping the marginal shoulder and rotatable withits circumference adjacent to the concentric rib. A fiat support is thusfurnished for the insole which is substantially continuous at thecritical point where the insole is engaged by the feedinginstrumentalities of the machine.

A further feature of the invention consists in the cooperatingsupporting disks above described in combination with a driven feed wheelwhich engages the margin of the sole blank in a location directly abovethe supplementary disk and adjacent to the point of tangency of thesupplemental disk with the concentric rib.

As herein shown, the ribbed disk is yieldingly mounted and thesupplementary disk is mounted so that it may move freely up and downwith the former. A further feature of the invention consists in theprovision of a pair of edge gauge rolls which operatively engage theedge of the sole blank regardless of its thickness and regardless of thevertical position of the supporting disks which may be movable to directthe sole blank in operative relation to an overhead feed wheel mountedfor rotation about a fixed axis.

These and other features of the invention will be best understood andappreciated from the following description of a preferred embodimentthereof, selected for purposes of illustration and shown in theaccompanying drawings in which:

Fig. 1 is a plan view of the operative parts of the machine,

Fig. 2 is a view in front elevation, partly in section, and

Fig. 3 is a view in side elevation.

In the accompanying drawings the frame of the ma- States Patent C icechine is not shown since it forms no part of the invention and may be ofany construction and shape suitable for supporting and driving theoperative parts illustrated. These comprise a driven shaft 10 rotatableabout a fixed axis and carrying at its enda toothed or serrated feedwheel 11. The work supporting elements include a large fiat disk 12having an upstanding concentric rib 13 which defines a marginal shoulderon the disk. The disk is secured to a hub 14 fast to the upper end of ashouldered shaft 15 journaled for free rotation about a vertical axis inbearings not shown. The shaft is encircled by a compression spring 16which urges the disk 12 upwardly at all times to a position dependingupon the thickness of the insole supported thereby and its engagement bythe feed wheel 11.

A supporting plate or bracket 17 is mountedin the machine for freevertical movement and provided with an upstanding spindle 18 upon whichis rotatably mounted a shouldered edge gauge roll 19 carrying asupplementary disk 20 which, as well shown in Fig. 3, overlaps themarginal shoulder of the disk 12 and is free to rotate with itscircumference almost touching the upstanding rib 13 of the larger disk.The gauge roll 19 is provided with an overhanging collar 21 and it willbe apparent that these elements are free to adjust themselves inaccordance with the vertical position of the disk 12 and the thicknessof the insole which derives its support from them, that is to say, thesupplementary disk 20 rotates always in contact with the marginal topsurface of the disk 12 while the collar 21 rests upon the upper marginalsurface of the insole at a point adjacent to the rear surface of thefeed wheel 11 and substantially in a line between the axes of the shaft15 and spindle 18.

The movable bracket 17 also carries a second spindle 22 upon which isrotatably mounted a second edge gauge roll 23 located somewhat beyondthe edge gauge roll 19 in the direction of feed. This roll is of uniformdiameter and is efiective in guiding the sole at whatever point it isengaged by the roll.

A discharge nozzle 24 for liquid cement is supported by a supply pipe 25for limited movement or vertical adjustment so that it will ride uponthe surface of the sole or insole to which the band is being applied. Asherein shown the nozzle 24 is cylindrical in shape and provided with arow of discharge ports in its lower wall. It is horizontally disposed,inclined to the direction of work feed, and located so that itintersects a line drawn between the axes of the disks 12 and 20 andextends close to the edge gauge roll 23.

In operating the machine above described the disk 12 is temporarilylowered with the disk 20 and associated parts, thus permitting theinsole to be inserted in position beneath the feed roll 11 and thenozzle 24 and in contact with the edge gauge rolls 19 and 23 as shown inFig. 1. Upon releasing the disk 12 for upward movement, the insole isyieldingly engaged between the rotary supporting elements and the feedwheel. It is then fed continuously under the nozzle 24 and a band ofcement applied and carried completely around the upper marginal surfaceof the sole, as indicated in Fig. 1.

Having thus disclosed my invention and described in detail a preferredembodiment thereof, I claim as new and desire to secure by LettersPatent:

1. A machine for applying a band of cement to an insole, comprising aninsole supporting disk rotatable freely about a vertical axis and havingan upstanding concentric rib presenting a flat sole-supporting face anddefining a marginal shoulder on the disk, a supplementary diskoverlapping the marginal shoulder of said insolesupporting disk andpresenting a surface substantially flush with and adjacent to the top ofthe rib thereof, a

feed roll driven about a horizontal axis and cooperating with thesupplementary disk to advance an insole, and a cement nozzle occupying afixed position adjacent to the feed roll and above the sole-supportingdisk.

2. A machine for applying a band of cement to an insole as described inclaim 1 further characterized by the fact that the insole-supportingdisk is mounted for yielding vertical movement and that thesupplementary disk is free to ride up and down in the margin thereof.

3. A machine as described in claim 1 in which the insole-supporting diskis spring-mounted for vertical movement and the supplementary disk isfree to ride up and down in contact with it in accommodating insoles ofdifferent thicknesses, while the cement nozzle is mounted in a verticalposition above the insole-supporting disk at an inclination to thedirection of feeding movement.

4. A cement applying machine including in its organization a worksupporting disk rotatable freely about a vertical axis and having anupstanding concentric rib defining a marginal shoulder on the disk andpresenting a fiat sole-supporting face, a supplementary disk overlappingsaid marginal shoulder and rotatable with its circumference adjacent tothe concentric rib and its surface flush with that of the rib, incombination with an overhanging cement nozzle and work feeding means,the nozzle being horizontally disposed, inclined in the direction of thework feed and located so that it intersects a line drawn between theaxes of the work supporting disk and the supplementary disk and also toride upon the surface of the sole to which cement is being applied.

5. A machine for applying a band of cement to an insole, comprising aninsole supporting disk rotatable freely about a vertical axis and havingan upstanding concentric rib presenting a flat sole-supporting face anddefining a marginal shoulder on the disk, a supplementary diskoverlapping the marginal shoulder of said insolesupporting disk andpresenting a surface substantially flush with and adjacent to the top ofthe rib thereof, said supplementary disk being provided with an edgegauge roll movable therewith, a feed roll driven about a horizontal axisand cooperating with the supplementary disk to advance an insole, and acement nozzle occupying a fixed position adjacent to the feed roll andabove the sole-supporting disk.

6. A machine as described in claim 5 in which the edge gauge roll of thesupplementary disk is provided with a flange overlapping the insoleadjacent to the driven feed roll.

7. A machine as described in claim 5 in which a second edge gauge rollis located beyond the driven feed roll in the direction of work feed andadjacent to the cement nozzle.

References Cited in the file of this patent UNITED STATES PATENTS1,303,283 Fowler May 13, 1919 1,395,270 Glass Nov. 1, 1921 1,794,353Andersson -2 Feb. 24, 1931 1,928,693 Johnson Oct. 3, 1933 2,038,561Hadaway Apr. 28, 1936 2,249,742 Brostrom July 22, 1941 2,257,826Valentine Oct. 7, 1941

